EPA Method 524 & 624 - Internal Standard Back Catalog number: 19794 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8422.10-10MG Tolylfluanid, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 731-27-1 Price on request S-4503-100-25LW Phosphorous Standards Phosphorus in Light White Mineral Oil, 20Cst Tri-n-butylphosphate, 99+% (Chiron product nr. 1399.19) CAS [126-73-8] Matrix: Isooctane , 20cSt Units: 1x25mL, 1x100mL Isooctane Price on request L429-IS Method 429 Internal Standard Solution, 100µg/ml in Isooctane/25% toluene, 1,2ml Price on request